Replacement: WRL-10414. This new version is a Series 2 which uses a much newer firmware. It is compatible with the Series 2.5, if you upgrade the firmware through X-CTU. Description: This is the 2.4GHz XBee XB24-BUIT-004 module from Digi (formally Maxstream). Series 2.5 improves on the power output and data protocol. These modules take the 802.15.4 stack (the basis for Zigbee) and wrap it into a simple to use serial command set. These modules allow a very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point networks are supported. Note: Series 1 and Series 2.5 XBee modules have the same pin-out. However, Series 1 modules cannot communicate with new Series 2.5 modules. Features: • 3.3V @ 40mA • 250kbps Max data rate • 2mW output (+3dBm) • 400ft (120m) range • U.FL antenna connector • Fully FCC certified • 4 10-bit ADC input pins • 10 digital IO pins • 128-bit encryption • Local or over-air configuration • AT or API command set